/*
 * Copyright 2015 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.cloud.datastore;

import java.io.Serializable;

/**
 * A common interface for Value marshallers.
 */
interface ValueMarshaller<V, P extends Value<V>, B extends ValueBuilder<V, P, B>>
    extends Serializable {

  B fromProto(com.google.datastore.v1.Value proto);

  com.google.datastore.v1.Value toProto(P value);

  int getProtoFieldId();
}
